Home Latest News Using T5 Fluorescent Grow Lights to Start Onion Seeds Indoors Using T5 Fluorescent Grow Lights to Start Onion Seeds Indoors Hands on Hydroponics Jan 13, 2013 comments off Tweet on Twitter Share on Facebook Pinterest fluorescent fluorescents general hydroponics growlight kelsae kelsae onion mycorrhizae Onion Seed onion seeds subculture sunlight supply t5